Error pops up during Firefox startup

3 posts · originally from https://geek.digit.in/community/threads/error-pops-up-during-firefox-startup.136403/

Hello, I am running Windows XP SP3 and have Mozilla Firefox 4 beta 10 installed. Every time I start firefox an error comes which shows the following

Title: [Javascript Application]
Content: TypeError: Components.classes[cid] is undefined

After I click OK, firefox runs normally. Please help me out.

Thanks in advance...

pls post a screen shot

reinstall once

Is your home page set to google or something else? It is possible that the homepage of yr FF is set to a webpage, which is giving this error at startup.
Try to reinstall FF, as thetechfreak suggested, and try a stable version like, Firefox 3.6.13.

If problem persists. use Chrome